This is how I found out about he size difference. Friend got one and did not have the inflator went to LDS and they went through this long explanation how Halcyon is a little bit bigger. I do not have mine yet, just bought it off boards and it is shipping. My other friend said he thought that ONLY Halcyon ones will fit. Form other posts on here it looks like others fit fine also.
This is why a asked the question and was hoping to see if other ones do fit and from there I can way out my best options on an inflator hose.
I know my Scuba pro with Air II is different from my wife's Zeagal.
Could you please clarify what part you think is non-standard on the Halcyon power inflater assembly?
Is it the part that connects to the low pressure inflater hose? (quick-disconnect fitting)
Or is it the end of the corrugated hose to which the power inflater is attached?
I think your friend's BCD issue had to do with the diameter of the Halcyon corrugated hose. AFAIK, the Halcyon wing uses a 1-inch standard diameter corrugated hose. The
vast majority of BCDs and wings use 1-inch diameter corrugated hoses. A handful of BCD manufacturers (Aqualung/Seaquest and Oceanic) still use 3/4-inch diameter corrugated hoses.
Your AirII octo/inflater assembly uses a
non-standard quick-disconnect fitting. I have found this to be the case with several of the octo/inflater combos. I believe the reason for this is that the octo/inflater combos require a larger diameter inflater hose, which provides greater flow to the mouthpiece for breathing purposes. One can purchase an adapter that converts the AirII inflater hose to a standard BCD inflater hose (so that your reg setup can be used with a BCD that has a standard power inflater).
For assemblies functioning solely as power inflater to the wing/BCD bladder, the majority use the standard quick-disconnect. I use the identical (standard) LP inflater hoses on my Halcyon wing, Deep Sea Supply wing, and Seaquest BCDs.
Of course, LP inflater hoses and corrugated hoses come in many different lengths. Generally, new BCDs and wings are sold with the appropriate length LP inflater hose matched to the corrugated hose.
Hope this clarifies things...